Deep-well pumping apparatus



Patented May 12, 1925.

UNITED STATES JOHN N. lVIODISETT, 0F HERMOSA`BEACH, CALIFORNIA.

DEEP-WELL PUMPING APPAIEtA'lIlS.V

Appiication ined May 27, 1924. seriai No. 716,240. Y

T0 all 107mm t may concern:

Be it known that I, JOHN N. Monrsirr'r, a

citizen of the lUnited States, residing at Hermosa Beach, in the countyof Los Angeles and State of California, have in-.

vented certain new and useful Improvements in Deep-l/Vell PumpingApparatus,

of which the following is a specification, reference being had to theaccompanying drawings.

This invention relates to deep well pumping apparatus and moreparticularly to an improvement in that type Aof pumping ap paratususually employed in oil wells.

An important object of the invention is to provide for pumping apparatusof this character an attachment for the standing valve and workingbarrel of the pumping apparatus whereby upon a predetermined operationof the tubing constituting the pumping line the standing valve isunseated.

It is well known to those familiar with the art that these standingvalves are often very difficult to unseat, being subjected to a pressurehead equal to the height of the line above the working barrel and, inaddition, being subject to sanding caused by precipitation of finesediment, as sand and the like, carried intothe working-barrel by theoil and there deposited. This `sanding often becomes so severe as toactually prevent operation of the standing and work ing valves of thebarrel and accordingly a still further Vobject of the invention is theprovision of means whereby the sand may be drained from the workingbarrel without complete removal of the standing valve 'from the well.

A further object of the invention -is to provide a device of thischaracter which'accomplislies shifting of the standing valve without thenecessity of attempting the hoisting thereof with the sucker rods whichin such attempts are often parted thereby necessitating pulling of theentire tubing, working barrel and associated parts to repair thebreakage.

rIhese and other objects lI attain by the construction shown in theaccompanying drawings, wherein for the purposevof illustration is showna preferred embodiment of my invention and wherein y Figure 1 is a sideelevation of apparatus constructed in accordance with my invention inposition within a well and in the position in which it remains duringpumping operations;

Figure 2 is a sectional View showing1 the dev ice in the position itassumes when the Vcasing is lowered;

Figure 3 is an enlarged sectional View through the device;

Figure 4 is a transverse sectional view on the line 4 4 of Figure 3.

Referring now more particularly to the drawings, the numeral 10indicates an Voil` well casing within which is disposed the usual tubing11 having at its lower. end a working barrel 12 in the lower end ofwhichr is seated a standing valve 13. y

In accordance with my invention Ifcouple to the lower end of the workingbarrel 12 a short length of pipe`14 which is preferably perforated. Thispipe may, if so'y desired, be in the forni of a well screen of theproper diameter and preferably of the saine diameter as the workingbarrel.

the lower end of the standing valve 13'I.

secure a conduit 15 which projects downwardly from the lower end of thevalve through the lowerend of the working barrel andinto the pipe orscreen 14, this conduit beingof less length .than t-lie conduit '14 andof considerably less diameter. f

At the lower end of the conduit .or screen 14 I secure a head -16through which is slidably axially directed asecond section of conduit 17which is slidablyeiigaged with the head 16` and has witliinthe screen`14 a head 18 of less diameter than .the interior of the screen 14 and'between this head and thef head 1,6 a, cushioning springlf) is inserted.The conduit `17 is preferably providedpwith a coupling or shoulder 20forming a seatfor the lower end of a second spring 21 andaliinit fordownward movement of the head 16 upon the conduit 17. rIhe bore of theconduit 17 is of a size to receive the pipe extension 15 of thestanding. valve and has therein adjacent the upper end' thereof a'spider 2Q the purpose of which will presently appear.

In the use of t-he device the .device is installed before theloweringjof the pump tubing and working barrel into the fwell.Y In eventof sanding up of the well thev working barrel, together with the tubing.is lowered permitting the lower end of the'coiiduit 17 to come to restupon the lower'endfof the well, lowering Vbeing. continued until the icsllO

said member limiting downward movement of the guide thereon prior toengagement of the lower end of the working barrel with the member, aste-m secured to the lower end of the working barrel and with which saidmember engages, the stem of said standing valve being of a lengthsufficient to elevate the standing valve above the upper end of theworking barrel when the guide is in its lowermost position, said meansfor limiting downward movement of the guide Comprising an upwardlyfacing shoulder on the member, and a spring seated upon said shoulder.

6. In deep well-pumping apparatus and in combination with the usual wellcontained unit including tubing, working barrel oarried thereby, andstanding valve seated within the working barrel, means supported fromthe bottom of the well and guided from the lower end of the workingbarrel operatively engaging the standing valve during downward movementof the well contained unit from its normal or pumping posit-ion tounseat the standing valve and 'elevate the same above the upper end ofthe working barrel, including a guide carried by the lower end of theworking barrel, a member telescopically engaged with the guide andshiftable therethrough toward the lower end of the working barrel, meanson said member limiting downward movement of the guide thereon prior toengagement of the lower end of the working barrel with the member, and astem secured to the lower end of the working barrel and with which saidmember engages, the stem of said standing valve being of a lengthsufficient to elevate the standing valve above the upper end of theworking barrel when the guide is in its lowermost position, said guidebeing in the form vof a tubular screen having a head at its lower endthrough which the member is directed.

7. In deep well pumping apparatus and in Combination with the usual wellcontained unit including tubing, working barrel earried thereby, andstanding valve seated within the working barrel, means supported fromthe bottom of the well and guided from the lower end or" the workingbarrel operatively engaging the standingvalve during downward movementof the well contained unit from its normal or pumping position to unseatthe standing valve and elevate the same above the upper end of theworking barrel, including a guide carried by the lower end ofl theVworking barrel, amember Vteleseopically engaged with the guide and thestanding valve above the upper end of the working barrel when the guideis in its lowermost position, said guide being in the form of a' tubularscreen having a head at its lower end through whieh the member isdirected, the member having a head -op erated within the screen, and aspringbetween the heads of the Ouide and member.

In testimony whereoi I hereunto affix my signature.

Jol-in N. Momsnrr.

